Thread: New to this whole supercharged thing!!!

It's pretty impossible to tell if you have other mods without digging in to the engine. If you don't have a lopey idle, then you don't have a cam. Rockers need to be removed and if they're modified stocks its hard to tell by a visual. The rest needs to be taken off and compared to see if you have any porting or anything done.

I highly doubt you have what is required to run a 3.25.

Originally Posted by nfloyd2006

I didnt think i would...is there anything i could do to run that w/o doing MAJOR work? colder plugs/free up the exhaust/etc?

That sort of stuff is only a few of the requirements to run larger pulleys than the 3.25.

This should give you an idea of what you need:

97-03 Grand Prix & 04+ supercharged Impala & Monte Carlo SS

3.5 pulley totally stock car

3.4 pulley Colder Tstat & spark plugs, downpipe, Cold air intake (still could have KR)

3.3 pulley all of the above plus a VS cam, SS intercooler, or headers

3.2 pulley 3.4 mods and a XP cam

3.0 pulley 3.4 mods and a fullsize intercooler or an SS ic and a VS cam.

Anything smaller than a 3.0 pulley will require a camshaft, headers, intercooler & injectors.

And those are what some would consider bare minimums for those pulleys. You should never drop a pulley without scanning for KR.

Its possible your car is a freak and is running little to no KR, there has been that before. You will never know till you scan. Info above is good reference.